Transfer for applying designs to wood and other surfaces



Patented May3, 1938 H I v UNITED STATES PATENTOFFICE TRANSFER FOR APPLYING DESIGNS TO WOOD AND OTHER SURFACES Hans Kaufmann, Berlin-Charlottenburg,

' Germany No Drawing. Application March 6, 1936, Serial No. 67,511. in Germany December 9, 1935 3 Claims. (Cl. 41-33) The invention relates to a transfer design and places in the transferred design. This, of course, a process, characterized by employing as interled to waste products and hence to an increase mediate support a foil of cellulose derivatives in the cost of pieces free from defect. particularly cellulose acetate--on which the The present invention is based partly on the 5 colours are printed directly in the form of printdiscovery that the adhesive power of preferably ing colours, and which is applied to a smoothly thin and conveniently 0.02 mm. to 0.05 mm. thick polished support by means of pressure and heat. thermo-plastic foil of. cellulose derivatives, par- It is already known to produce imitations of ticularly cellulose acetate, pressed by means'of valuable wood, inlay work and other pictorial pressure and heat upon smoothly polished wood ornamentation on wood and other surfaces by or other surfaces is very much greater than that 1 applyingsuitable prints to less valuable wood and of thicker foil (0.06 mm. upward) of the same the like. In this case, it has appeared necessary composition. For example, such a foil in a. thickto employ transfer designs in which the colours ness of 0.2 mm; after beingpressed on to a are backed by an opaque covering layer which smoothly polished wood or other surface, can be had to be applied to asurface specially pre-treateasily stripped off the latter again while a'foil ed by etching, lacquering, varnishing or polishing. of the same compositionbut of a thickness of It was, however, only possible technically to em- 0.02 min-adheres to the said surface so firmly ploy transfer designs of small size. that it cannot be detached at all or only in small In order to be able to provide also large surpieces.

faces with pictorial ornamentation, ordinary It has now been found that if such foil is 20 paper which had on its surface any design in printed with colours and isv pressed upon a detachable colours (in the form of oil colours and smoothly polished support with the application the like) has been placed with this surface on of considerable heat and high pressure, and is the wood to be ornamented and both pressed tostripped off the latter after pressing, the colours 5 gether at an elevated temperature (at least will have become entirely detached from the .80 C.) and simultaneous powerful pressure (up colour support and will have become anchored to about kilograms per square centimetre). firmly in the surface-of the support together with The intention was in this way to cause the colours the softened and loosened parts of the foil, so to be transferred from the support to the wood, firmly, in fact, that the design can be polishedat :m which, after removal of the paper, was to remain once. i The design appears on the support with- 30 capable of being polished. In this case, however. out defect and continuous. v

it has been found that the paper retained some I claim:

of the colour which had been absorbed by the 1. A method to decorate polished wood and paper fibre, and for this reason the design on other surfaces, which method comprises applying the wood always appeared pale. a design in printing colors to a cellulose derivel- In order to obviate this disadvantage, real tive foil of at least 0.06 mm. thickness, pressing transfer paper has been employed in place of the design side of the foil onto the surface to be or'dinary paper. Since the layer of gum on the. decorated under sufiicient pressure and heat to said transfer paper did not take printing colours, weaken and loosen particles of said foil disposed the surface was first provided with a layer of jacent said surface and stripp n Off h r varnish which took the printing colours. on the melding P t O d f to leave S des n and colours now printed a second layer of varnish d particles of full fi y ed to sa d 111"- was provided. The backing of an opaque coverfaceing layer had been intentionally omitted in rd r 2. A transfer sheet to decorate polished wood in places to expose the wood support nd i or other surfaces, comprising a cellulose derivaplaces to allow it to appear through. This tran tive foilof at least 0.06 mm. thickness and a fer design waspressed by means of pressure and design a y Printing 00101'8 pp ed to d heat upon the previously roughened surface. It foil.

has been found. however, that after transferring 3. A transfer sheet, as claimed in claim 2, in

d and removing the transfer paper, it was often which said foil consists of cellulose acetate.

not possible to avoid small orlarge defective HANS KAUFMANN. 

